PLUNGER TYPE INJECTION DEVICE HAVING VALVE BLOCK PROVIDED AT TOP OF DEVICE

PROBLEM TO BE SOLVED: To provide a plunger type injection device having a valve block connected at the top thereof, capable of minimizing the residual amount of a resin at injection, and thereby capable of preventing deterioration of a resin quality by carbonization or the like.SOLUTION: There is pr...

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Bibliographische Detailangaben
Hauptverfasser:	TSUJI KAZUYA, INOUE SHIGEKI, SAGA DAIGO, YASUE AKIRA, TAKEYA MASAHIKO, NISHIDA SHOZO, HARADA TAKASHI
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING PERFORMING OPERATIONS SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS TRANSPORTING WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a plunger type injection device having a valve block connected at the top thereof, capable of minimizing the residual amount of a resin at injection, and thereby capable of preventing deterioration of a resin quality by carbonization or the like.SOLUTION: There is provided a plunger type injection device (4, 5) in which a valve block (7) is connected to the top of the plunger type injection device comprising the injection cylinders (13, 14), and plungers (16, 17) provided in the cylinders (13, 14) drivably in an axial direction. In the valve block (7), one valve (21) is provided, and the plungers (16, 17) are configured so that the tops thereof intrude into the flow channels (23, 23) in the valve block (7) at injection.SELECTED DRAWING: Figure 1 【課題】先端にバルブブロックが接続されたプランジャ式の射出装置において、射出時に樹脂の残留量が可及的に少なく、従って樹脂の炭化等の品質の低下を防止することができるプランジャ式の射出装置を提供する。【解決手段】射出シリンダ（１３、１４）と、該射出シリンダ（１３、１４）内で軸方向に駆動可能に設けられているプランジャ（１６、１７）とからなるプランジャ式の射出装置（４、５）の先端にバルブブロック（７）が接続されているプランジャ式射出装置（４、５）を対象とする。バルブブロック（７）は１個のバルブ（２１）が設けられ、プランジャ（１６、１７）は、射出時にその先端がバルブブロック（７）内の流路（２３、２３）に侵入するように構成する。【選択図】図１